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College Physics (Urone)
Found in: Page 809
College Physics (Urone)

College Physics (Urone)

Book edition 1st Edition
Author(s) Paul Peter Urone
Pages 1272 pages
ISBN 9781938168000

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Short Answer

Is the force attractive or repulsive between the hot and neutral lines hung from power poles? Why?

Force will be repulsive between the hot and neutral lines hung from power poles.

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :
TABLE OF CONTENTS

Step 1: Hot and Neutral lines

The "hot" wire is in black color which carries electricity from the breaker panel to the switch or light source.

The "neutral" wire is in white color that returns any unneeded electricity and current to the breaker panel.

Step 2: Force between hot and neutral lines

  1. The hotline is the line that carries current through it but the neutral line does not.

  2. This indicates that current will be induced in the neutral line as a result of the hot line’s electric field.

  3. The current will flow in the opposite direction resulting in a repulsive force between the lines.

Therefore, the force will be repulsive between the hot and neutral lines hung from power poles.

Most popular questions for Physics Textbooks

A 200-turn circular loop of radius 50.0 cm is vertical, with its axis on an east-west line. A current of 100 A circulates clockwise in the loop when viewed from the east. The Earth's field here is due north, parallel to the ground, with a strength of 3.00×10‐5 T . What are the direction and magnitude of the torque on the loop? (b) Does this device have any practical applications as a motor?

An example of magnetohydrodynamics (MHD) comes from the flow of a river (salty water). This fluid interacts with the Earth’s magnetic field to produce a potential difference between the two river banks. How would you go about calculating the potential difference?

An electron moving at 4.00×103 m/s in a 1.25‐T magnetic field experiences a magnetic force of1.40×10‐16 N. What angle does the velocity of the electron make with the magnetic field? There are two answers.

An inventor wants to generate \({\rm{120 - V}}\) power by moving a \({\rm{1}}{\rm{.00 - m - long}}\) wire perpendicular to the Earth's \({\rm{5}}{\rm{.00 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}{\rm{\;T}}\) field. (a) Find the speed with which the wire must move. (b) What is unreasonable about this result? (c) Which assumption is responsible?

Repeat Exercise 22.5 for a negative charge.
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